Cavity filter

Abstract

The utility model provides a cavity filter, and relates to the tuning filtering technology field, the cavity filter comprises a pedestal and a working mechanism, the working mechanism is arranged above the pedestal, and the working mechanism comprises a protection assembly, an installation assembly, a copper bar assembly, a basic assembly, a stabilization assembly and a safety assembly. The stability and the electromagnetic compatibility of the device are ensured, the stability of the whole structure is enhanced through the sealing of the cover plate and the locking operation of the connecting pad and the mounting groove, the mounting process of the positive and negative copper bars of the copper bar assembly is simplified through the bayonet of the mounting cavity, and the connection design of the copper plate and the connecting plate of the basic assembly is more convenient. The device is simple in structure and convenient to operate, convenience is provided for insulation work, the stability of the device is effectively improved through tight attachment of a fixing rod and a sleeve of the stabilizing assembly, and finally, due to the design of an insulation protection layer and a magnet of the safety assembly, replacement of the magnet is facilitated, the safety of the device is enhanced, and the risk of electric leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of tuning and filtering, in particular to a cavity filter. Background Art

[0002] A cavity filter is an electronic device specially used in power systems and electronic circuits. It achieves signal purification and frequency selection through a cavity structure containing electronic components such as capacitors, inductors, and resistors, thereby allowing only signals within a specific frequency range to pass. Its core functions include removing interference signals to improve signal purity, enhancing electromagnetic compatibility to reduce electromagnetic interference to other equipment, protecting sensitive electronic equipment from damage by high-frequency noise, and optimizing power distribution and improving system stability. In addition, cavity filters can also improve the signal transmission quality of communication systems and reduce signal distortion and attenuation. According to specific technical requirements and usage environment, the design of cavity filters can be customized to meet different performance standards and operating conditions.

[0003] After searching, the document of announcement number "CN215732130U" mentioned that "the utility model discloses a cavity filter, which belongs to the field of tuned filtering technology, including a cavity; a resonant rod, provided with at least two, at least two resonant rods are arranged at intervals along a first direction, each resonant rod includes a plurality of monomer resonant rods respectively fixed in the cavity, and the plurality of monomer resonant rods are arranged in sequence along a second direction, and the second direction is perpendicular to the first direction; a partition, a partition is provided between each two adjacent resonant rods, one end of the partition is in contact with the inner wall of one end of the cavity, and the other end of the partition is spaced from the inner wall of the other end of the cavity, and the partition is arranged at an interval. A communication port is provided on the top surface, and the monomer resonant rods of two adjacent resonant rods can be electrically coupled through the communication port. The cavity filter provided by the utility model can generate a transmission zero point without setting a flying rod, so that the internal structure of the cavity filter is relatively small and the assembly is simple. When in use, it can generate a transmission zero point without setting a flying rod, so that the internal structure of the cavity filter is relatively small and the assembly is simple. However, the filter needs to be maintained after a long period of use. Although the above device mentions a detachable design, when facing a smaller filter, the card slot connection method adopted by the above device will have the problem of being unable to engage.

[0004] Therefore, we provide a cavity filter to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a cavity filter to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cavity filter, comprising a base and a working mechanism, wherein the working mechanism is arranged above the base;

[0007] The working mechanism includes a protective component, an installation component, a copper busbar component, a basic component, a stabilizing component and a safety component. A protective component is arranged above the base, an installation component is arranged on the surface of the protective component, a copper busbar component is arranged below the installation component, a basic component is arranged on one side of the copper busbar component, a stabilizing component is arranged on the other side of the basic component, and a safety component is arranged on the outside of the stabilizing component.

[0008] Preferably, the protection component includes a shell and a cover plate, the shell is arranged above the base, and the cover plate is arranged above the shell.

[0009] Preferably, the mounting assembly includes a connecting pad, a mounting groove, a connecting rod and a mounting cavity. A connecting pad is provided at the upper end of the cover plate, a mounting groove is nested and connected at the lower end of the cover plate, connecting rods are fixedly installed around the lower end of the cover plate, and a mounting cavity is nested below the connecting rod.

[0010] Preferably, the copper bar assembly comprises a positive copper bar and a negative copper bar, the positive copper bar is arranged on the inner side of the cover plate, and one side of the positive copper bar is electrically connected to the negative copper bar.

[0011] Preferably, the basic component includes a copper plate, a through hole, a connecting plate and a bayonet, one side of the positive copper busbar is threadedly connected to the copper plate, the surface of the copper plate is nested with a through hole, the inner side of the copper plate is threadedly connected to the connecting plate, and one side of the connecting plate is fixedly provided with a bayonet.

[0012] Preferably, the stabilizing assembly comprises a fixing rod and a sleeve, the fixing rod is nested on the outer side of the through hole, the sleeve is fixedly connected to the outer side of the fixing rod, and the fixing rod and the sleeve fit tightly.

[0013] Preferably, the safety component includes an insulating protective layer, a magnet and a folding plate, the upper and lower ends of the connecting plate are nested with insulating protective layers, both sides of the insulating protective layer are movably connected with magnets, and one side of the magnet is threadedly mounted with a folding plate.

[0014] Preferably, an auxiliary component is provided at the inner lower end of the shell, and the auxiliary component includes a capacitor element, a capacitor cavity, a connecting port, a locking piece and a circuit board. The capacitor element is provided at the inner lower end of the shell, the capacitor cavity is nested and connected in the inner center of the capacitor element, a connecting port is provided on one side of the capacitor cavity, the lower end of the capacitor element is threadedly connected to the locking piece, and a circuit board is electrically provided below the locking piece.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the setting of auxiliary components, the capacitor element, capacitor cavity, connection port, locking piece and circuit board are integrated into one, which reduces the dependence on external circuits and improves the overall integration and stability. The use of locking pieces provides additional fixation for the circuit board and enhances the stability of the circuit. The design of the capacitor cavity not only carries the circuit board, but also effectively utilizes the space. The use of the connection port simplifies the connection process between the capacitor element and the copper busbar and improves the replacement speed. When the capacitor element is damaged, it can be directly replaced by power off, which simplifies the maintenance process. The design of the auxiliary components also provides flexibility, allowing adjustment and optimization according to different application requirements, improving the applicability of the filter and the convenience of maintenance.

[0017] 2. Through the setting of the working mechanism, the stability and electromagnetic compatibility of the device are ensured during use. The sealing of the cover and the locking operation of the connecting pad and the mounting groove enhance the stability of the overall structure. The positive and negative copper busbars of the copper busbar assembly simplify the installation process through the bayonet of the mounting cavity, and the connection design of the copper plate and the connecting plate of the basic assembly facilitates the insulation work. The stability of the device is effectively improved by the tight fit of the fixing rod and the sleeve of the stabilizing assembly. Finally, the design of the insulating protective layer and the magnet of the safety assembly not only facilitates the replacement of the magnet, but also enhances the safety of the device and prevents the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall hierarchical structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the copper busbar assembly, the basic assembly, the stabilizing assembly and the safety assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of the auxiliary component structure of the utility model.

[0022] Numbers in the figure: 1. base; 2. working mechanism; 21. protective component; 211. shell; 212. cover plate; 22. installation component; 221. connecting pad; 222. installation groove; 223. connecting rod; 224. installation cavity; 23. copper busbar assembly; 231. positive copper busbar; 232. negative copper busbar; 24. basic component; 241. copper plate; 242. through hole; 243. connecting plate; 244. bayonet; 25. stabilizing component; 251. fixing rod; 252. sleeve; 26. safety component; 261. insulating protective layer; 262. magnet; 263. folding plate; 3. auxiliary component; 31. capacitor element; 32. capacitor cavity; 33. connecting port; 34. locking piece; 35. circuit board. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] See also Figure 1-4 As shown, the utility model provides a technical solution: a cavity filter, comprising a base 1 and a working mechanism 2, wherein the working mechanism 2 is arranged above the base 1;

[0026] The working mechanism 2 includes a protective component 21, an installation component 22, a copper busbar component 23, a basic component 24, a stabilizing component 25 and a safety component 26. The protective component 21 is arranged above the base 1, the installation component 22 is arranged on the surface of the protective component 21, the copper busbar component 23 is arranged below the installation component 22, the basic component 24 is arranged on one side of the copper busbar component 23, the stabilizing component 25 is arranged on the other side of the basic component 24, and the safety component 26 is arranged on the outer side of the stabilizing component 25.

[0027] Furthermore, the protection component 21 includes a shell 211 and a cover plate 212 . The shell 211 is disposed above the base 1 , and the cover plate 212 is disposed above the shell 211 .

[0028] Furthermore, the installation component 22 includes a connecting pad 221, a mounting groove 222, a connecting rod 223 and a mounting cavity 224. The upper end of the cover plate 212 is provided with a connecting pad 221, the lower end of the cover plate 212 is nested and connected with the mounting groove 222, connecting rods 223 are fixedly installed around the lower end of the cover plate 212, and the mounting cavity 224 is nested below the connecting rod 223. The device is sealed by the cover plate 212, and the connecting rod 223 is locked by the connecting pad 221 and the mounting groove 222, thereby improving the stability of the structure.

[0029] Furthermore, the copper bar assembly 23 includes a positive copper bar 231 and a negative copper bar 232. The positive copper bar 231 is arranged on the inner side of the cover plate 212, and one side of the positive copper bar 231 is electrically connected to the negative copper bar 232. The positive copper bar 231 and the negative copper bar 232 are placed in the installation cavity 224, and are connected thereto through the installation cavity 224 to form a bayonet 244, which facilitates the installation of subsequent components.

[0030] Furthermore, the basic component 24 includes a copper plate 241, a through hole 242, a connecting plate 243 and a bayonet 244. The copper plate 241 is threadedly connected to one side of the positive copper busbar 231. The through hole 242 is nested on the surface of the copper plate 241. The connecting plate 243 is threadedly connected to the inner side of the copper plate 241. A bayonet 244 is fixedly provided on one side of the connecting plate 243. The copper plates 241 on both sides are connected by using the connecting plate 243, and the preset bayonet 244 is used to facilitate subsequent insulation work.

[0031] Furthermore, the stabilizing component 25 includes a fixing rod 251 and a sleeve 252. The fixing rod 251 is nested on the outer side of the through hole 242, and the sleeve 252 is fixedly connected to the outer side of the fixing rod 251. The fixing rod 251 fits tightly with the sleeve 252. The fixing rod 251 is inserted into the through hole 242, and the sleeve 252 is used to increase its friction, thereby achieving the purpose of locking, further enhancing the stability of the device.

[0032] Furthermore, the safety component 26 includes an insulating protective layer 261, a magnet 262 and a folding plate 263. The insulating protective layer 261 is nested at both upper and lower ends of the connecting plate 243. The magnets 262 are movably connected to both sides of the insulating protective layer 261. A folding plate 263 is threadedly installed on one side of the magnet 262. The magnet 262 is fixed by the engagement of the folding plate 263 and the connecting plate 243. When the magnet 262 needs to be replaced, only the folding plate 263 needs to be removed to complete the operation, thereby improving the convenience of disassembly of the device. The above-mentioned copper bus is wrapped by the insulating protective layer 261 to prevent leakage of the device and enhance the safety of the device.

[0033] Embodiment 2

[0034] See also Figure 2 and Figure 4 As shown, compared with Example 1, as another implementation of the utility model, an auxiliary component 3 is provided at the inner lower end of the shell 211, and the auxiliary component 3 includes a capacitor element 31, a capacitor cavity 32, a connecting port 33, a locking piece 34 and a circuit board 35. The capacitor element 31 is provided at the inner lower end of the shell 211, and the inner center of the capacitor element 31 is nested and connected with the capacitor cavity 32, and a connecting port 33 is provided on one side of the capacitor cavity 32. The lower end of the capacitor element 31 is threadedly connected with a locking piece 34, and a circuit board 35 is electrically provided below the locking piece 34. The capacitor element 31 is fixedly connected to the above-mentioned copper bus by using the connecting port 33, and the circuit board 35 is fixed by the locking piece 34, so as to improve the stability of the structure, and the capacitor cavity 32 is used to carry the circuit board 35, so as to solve the disadvantage that the traditional filter needs external circuit support, and when the capacitor element 31 component is damaged, the power is turned off and the damaged component can be directly replaced, which is convenient for operation.

[0035] Working principle: First, a cavity filter is moved to the working position. When in use, the first step is to support the working mechanism 2 through the base 1, and then the device is sealed through the cover plate 212. The connecting rod 223 is locked through the connecting pad 221 and the mounting groove 222 to improve the stability of the structure. The positive copper bar 231 and the negative copper bar 232 are placed in the mounting cavity 224, and the mounting cavity 224 is connected with it to form a bayonet 244 to facilitate the subsequent installation of components. In the second step, the copper plates 241 on both sides are connected by the connecting plate 243, and the preset bayonet 244 is used to facilitate the subsequent insulation work. Then, the fixing rod 251 is inserted into the through hole 242, and the sleeve 252 is used to increase its friction. , thereby achieving the purpose of locking and further enhancing the stability of the device. In the third step, the magnet 262 is fixed by the engagement of the folding plate 263 and the connecting plate 243. When the magnet 262 needs to be replaced, the folding plate 263 only needs to be removed to complete the operation, thereby improving the convenience of disassembly of the device. The above-mentioned copper bus is wrapped by the insulating protective layer 261 to prevent leakage of the device and enhance the safety of the device. The circuit board 35 is fixed by the locking member 34 to improve the stability of the structure. Finally, the capacitor cavity 32 is used to carry the circuit board 35 to solve the disadvantage that the traditional filter needs external circuit support. When the capacitor element 31 is damaged, the power is turned off and the damaged component can be directly replaced. In this way, the use process of a cavity filter is completed.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cavity filter, comprising a base (1) and a working mechanism (2), characterized in that: A working mechanism (2) is arranged above the base (1); The working mechanism (2) comprises a protection component (21), a mounting component (22), a copper busbar component (23), a base component (24), a stabilizing component (25) and a safety component (26); the protection component (21) is arranged above the base (1); the mounting component (22) is arranged on the surface of the protection component (21); the copper busbar component (23) is arranged below the mounting component (22); the base component (24) is arranged on one side of the copper busbar component (23); the stabilizing component (25) is arranged on the other side of the base component (24); and the safety component (26) is arranged on the outer side of the stabilizing component (25).

2. A cavity filter according to claim 1, characterized in that: The protection component (21) comprises a shell (211) and a cover plate (212); the shell (211) is arranged above the base (1), and the cover plate (212) is arranged above the shell (211).

3. A cavity filter according to claim 2, characterized in that: The mounting assembly (22) comprises a connection pad (221), a mounting groove (222), a connection rod (223) and a mounting cavity (224); the upper end of the cover plate (212) is provided with a connection pad (221); the lower end of the cover plate (212) is nested and connected with the mounting groove (222); the lower end of the cover plate (212) is fixedly mounted with connection rods (223) around its periphery; and the mounting cavity (224) is nested and provided below the connection rods (223).

4. A cavity filter according to claim 2, characterized in that: The copper bar assembly (23) comprises a positive copper bar (231) and a negative copper bar (232); the positive copper bar (231) is arranged on the inner side of the cover plate (212); and one side of the positive copper bar (231) is electrically connected to the negative copper bar (232).

5. A cavity filter according to claim 4, characterized in that: The basic component (24) comprises a copper plate (241), a through hole (242), a connecting plate (243) and a bayonet (244); one side of the positive copper bar (231) is threadedly connected to the copper plate (241); the surface of the copper plate (241) is nestedly connected to the through hole (242); the inner side of the copper plate (241) is threadedly connected to the connecting plate (243); and one side of the connecting plate (243) is fixedly provided with a bayonet (244).

6. A cavity filter according to claim 5, characterized in that: The stabilizing assembly (25) comprises a fixing rod (251) and a sleeve (252); the fixing rod (251) is nested on the outer side of the through hole (242); the sleeve (252) is fixedly connected to the outer side of the fixing rod (251); and the fixing rod (251) and the sleeve (252) are tightly fitted.

7. The cavity filter according to claim 5, characterized in that: The safety component (26) comprises an insulating protective layer (261), a magnet (262) and a folding plate (263); the insulating protective layer (261) is nested at both upper and lower ends of the connecting plate (243); the two sides of the insulating protective layer (261) are movably connected with the magnet (262); and the folding plate (263) is threadedly mounted on one side of the magnet (262).

8. The cavity filter according to claim 2, characterized in that: An auxiliary component (3) is arranged at the lower inner end of the shell (211), and the auxiliary component (3) comprises a capacitor element (31), a capacitor cavity (32), a connection port (33), a locking piece (34) and a circuit board (35). A capacitor element (31) is arranged at the lower inner end of the shell (211), the capacitor cavity (32) is nested and connected at the center of the capacitor element (31), a connection port (33) is arranged on one side of the capacitor cavity (32), a locking piece (34) is threadedly connected at the lower end of the capacitor element (31), and a circuit board (35) is electrically arranged below the locking piece (34).

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